To what level do we obey and honor our parents in emotionally abusive/overcontriolling relationships?

The Bible makes it pretty clear that we should honor and obey our parents…but what are we supposed to do when those people whom we are to obey and honor, emotionally manipulate and reign over your life to the extreme? Personally, I’ve already been through this whole shebang with my mother…and it tore my relationship with her apart because she continued to try and manipulate me after I graduated college. I’m asking this because the guy that I am currently dating is younger than me and his mother is using emotional manipulation and no discussion to keep him from dating anyone by dictating that he “isn’t ready to date” and that he should continue “wait.” I don’t want to see his relationship with her blow up like mine did. I just want to seek some wisdom/advice for insight and whatnot.